CN110669886A - Heat-conducting long-life blast furnace hearth system and control method thereof - Google Patents
Heat-conducting long-life blast furnace hearth system and control method thereof Download PDFInfo
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- CN110669886A CN110669886A CN201911081229.1A CN201911081229A CN110669886A CN 110669886 A CN110669886 A CN 110669886A CN 201911081229 A CN201911081229 A CN 201911081229A CN 110669886 A CN110669886 A CN 110669886A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/04—Blast furnaces with special refractories
- C21B7/06—Linings for furnaces
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/006—Automatically controlling the process
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/02—Internal forms
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
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Abstract
The invention discloses a heat-conducting long-life blast furnace hearth system and a control method thereof, wherein the heat-conducting long-life blast furnace hearth system comprises: the resistant material of stove outer covering and heat conduction type furnace hearth, the resistant material of heat conduction type furnace hearth includes: the refractory material comprises a first hearth refractory material and a second hearth refractory material which are arranged from inside to outside, wherein the surface of the first hearth refractory material is of a concave-convex structure. The invention is beneficial to the long service life of the blast furnace.
Description
Technical Field
The invention relates to the field of iron making in the metallurgical industry, in particular to a heat-conducting long-life blast furnace hearth system and a control method thereof.
Background
The weak links of the service life of the blast furnace are the furnace bottom, the furnace hearth, the furnace belly, the furnace waist and the lower part of the furnace body. The temperature of molten iron and slag in the furnace cylinder is generally 1450-2300 ℃, and particularly, a large amount of coal gas is generated by burning coke in the tuyere zone, which is the zone with the highest temperature in the blast furnace and the temperature of the zone is 2000-2300 ℃. As a refractory material for the inner liners of the furnace bottom and the furnace hearth, the refractory material is subjected to the action of high temperature and the chemical erosion of iron slag and the scouring of molten iron. The hearth and the hearth of the blast furnace are the areas of the blast furnace with the highest load, and the service life of the hearth and the hearth determines the length of the service life of the blast furnace.
Hearth systems of blast furnaces at home and abroad can be classified into two types: heat insulation type composite construction, heat conduction type all-carbon brick structure.
The heat insulation type composite structure mainly has a carbon brick and ceramic cup structure, and has the main defects that: the irreversible consumption protection of the ceramic cup causes great difference in thermal expansion between the ceramic cup and the carbon brick, which causes concentration of internal stress and easily causes phenomena of upwarp of a tuyere, cracking of a furnace shell and the like. The expansion gap between the ceramic cup and the carbon brick is easy to enrich alkali metal, and a channel is provided for zinc steam, molten iron and coal gas; moreover, the method is contradictory to a hearth heat transfer system, and hearth cooling water is useless and has large loss; when the erosion of the ceramic cup is almost finished, the ceramic cup can suddenly collapse locally and cannot quickly form a protective layer, so that the carbon brick is directly exposed in molten iron without protection, and the erosion of the carbon brick is accelerated.
The heat-conducting all-carbon brick structure mainly has the following defects: the carbon brick has poor molten iron corrosion resistance, oxidation resistance and scouring resistance; the formed slag iron protective layer is not stable enough due to the existence of molten iron circulation and solidification latent heat; in addition, the carbon brick has high temperature, easy erosion and easy embrittlement, and the heat loss of the hearth is large.
With the progress of refractory technology in recent years, novel high-performance refractory materials are continuously generated, the protection of the refractory materials on the bottom of a blast furnace is greatly improved, but the circulation of molten iron in a hearth still aggravates the corrosion of the refractory materials of the hearth during tapping, and the service life of the blast furnace is seriously influenced.
Disclosure of Invention
In view of the above, the present invention provides a heat-conducting long-life blast furnace hearth system and a control method thereof, so as to solve the above-mentioned problem that the service life of a blast furnace is seriously affected due to the aggravation of erosion to refractory materials of a hearth caused by the circulation of molten iron in the hearth during tapping.
According to a first aspect of the present invention, there is provided a heat-conductive long-life blast furnace hearth system, comprising: the resistant material of stove outer covering and heat conduction type furnace hearth, the resistant material of heat conduction type furnace hearth includes: the refractory material comprises a first hearth refractory material and a second hearth refractory material which are arranged from inside to outside, wherein the surface of the first hearth refractory material is of a concave-convex structure, so that the slag iron protective layer on the surface of the hearth refractory material is stable.
Wherein, the furnace shell is a conical furnace shell with the outer diameter gradually reduced from bottom to top.
The heat conductivity coefficient of the heat-conducting hearth refractory material is reduced from a cold surface to a hot surface.
Preferably, the first hearth refractory is of a ceramic composite brick structure, and the second hearth refractory is of a carbon brick structure, wherein the ceramic composite brick is arranged in a concave-convex structure.
Further, the system further comprises: and the temperature measuring elements are arranged at different positions of the refractory material of the hearth.
Further, the heat-conducting long-life blast furnace hearth system further comprises: and the hearth cooling system is connected with the heat-conducting hearth refractory material and is used for providing cooling water for the hearth refractory material.
Further, the heat-conducting long-life blast furnace hearth system further comprises: and the hearth refractory monitoring system is used for acquiring the temperature of the hearth refractory by monitoring the temperature measuring element and monitoring the cooling water quantity and the cooling water temperature of the hearth cooling system.
Further, the heat-conducting long-life blast furnace hearth system further comprises: and the control system is used for controlling the cooling water quantity and the cooling water temperature in the hearth cooling system according to the temperature of the refractory material of the hearth monitored by the refractory material monitoring system of the hearth so as to realize the temperature control of the refractory material of the hearth.
According to a second aspect of the present invention, there is provided a control method of a blast furnace hearth system, the method comprising: monitoring temperature data of refractory material of a hearth, the refractory material of the hearth comprising: the surface of the first hearth refractory material is provided with a concave-convex structure; and respectively adjusting the cooling water quantity and the cooling water temperature in the hearth cooling system according to the temperature data so as to ensure the long service life of the blast furnace hearth system.
Preferably, the method further comprises: a plurality of temperature measuring elements are arranged at different positions of the hearth refractory material in advance.
Specifically, monitoring temperature data of hearth refractory includes: respectively monitoring the temperature data of the plurality of temperature measuring elements; and determining the temperature data of the refractory material of the hearth according to the temperature data of the temperature measuring elements.
According to a third aspect of the present invention, there is provided an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the above-described method for controlling a bottom hearth of a blast furnace when executing the program.
According to a fourth aspect of the invention, the invention provides a computer-readable storage medium having stored thereon a computer program which, when being executed by a processor, carries out the steps of the above-mentioned method of controlling a bottom hearth of a blast furnace.
According to the technical scheme, the inner surface of the hearth refractory material with the concave-convex structure is beneficial to forming a slag iron protective layer on the surface in the contact process of slag and molten iron, compared with the surface of the existing smooth hearth refractory material, the surface of the concave-convex structure is more beneficial to stabilizing the slag iron protective layer, the hearth refractory material is more effectively protected, the problem that the service life of a blast furnace is seriously influenced due to the fact that the circulation of the molten iron in the hearth aggravates the erosion of the hearth refractory material during tapping in the prior art can be solved, and the inner surface of the hearth refractory material with the concave-convex structure in the embodiment of the invention is beneficial to prolonging the service life of the blast furnace.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a heat-conducting long-life blast furnace hearth system according to an embodiment of the invention;
FIG. 2 is a schematic view of a concave-convex structure of refractory of a hearth according to an embodiment of the present invention;
FIGS. 3 and 4 are schematic views of the surface of a conventional smooth hearth refractory;
fig. 5 and 6 are schematic views of a refractory relief structure of a hearth according to an embodiment of the present invention;
FIG. 7 is a detailed structural schematic diagram of a heat-conducting long-life blast furnace hearth system according to an embodiment of the invention;
FIG. 8 is a flowchart of a control method of a blast furnace hearth system according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of an electronic device according to an embodiment of the invention.
Reference numerals:
1: a furnace shell;
2: a hearth cooling system;
3: a temperature measuring element;
4: a second hearth refractory (a large carbon brick);
5: a first hearth refractory (small ceramic composite bricks);
51: small sunken ceramic composite bricks;
52: small raised ceramic composite bricks;
6: a hearth refractory monitoring system;
7: a control system;
901: a processor;
902: a memory;
903: a bus;
904: a display controller;
905: an input/output device;
906: an input/output controller.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For the current blast furnace hearth system, in the conventional design, the refractory surface of the hearth close to molten iron is generally a smooth surface, which is not favorable for the stability of a slag iron protective layer on the refractory surface and the long-term stable operation of the hearth. And the furnace shell corresponding to the hearth is in a cylindrical shape with the same diameter from bottom to top, when the refractory material of the hearth is subjected to the buoyancy of molten iron and has the tendency of floating upwards, the refractory material of the hearth is prevented from floating upwards only by the friction force between the furnace shell and the refractory material of the hearth, the furnace shell does not have extra constraint on the refractory material of the hearth, and the refractory material of the hearth is easy to damage.
With the progress of refractory technology in recent years, novel high-performance refractory materials are continuously generated, the protection of the refractory materials on the bottom of a blast furnace is greatly improved, but the circulation of molten iron in a hearth still aggravates the corrosion of the refractory materials of the hearth during tapping, and the service life of the blast furnace is seriously influenced.
Therefore, the novel refractory material is fully utilized, and the long-life hearth system is researched, so that the method has great significance for prolonging the service life of the blast furnace and ensuring the long-term stable operation of the blast furnace.
Based on the above, the embodiment of the invention provides a heat-conducting long-life blast furnace hearth system, which is used for solving the problem that the service life of a blast furnace is seriously influenced because the circulation of molten iron in a hearth aggravates the corrosion to refractory materials of the hearth during tapping.
In the embodiment of the invention, the heat-conducting long-life blast furnace hearth system comprises: the stove outer covering and the refractory material of furnace hearth, wherein, the refractory material of furnace hearth specifically includes: the surface of the first hearth refractory material is provided with a concave-convex structure, the inner surface of the hearth refractory material with the concave-convex structure is beneficial to forming a slag iron protective layer on the surface in the process of contacting molten slag and molten iron, compared with the surface of the existing smooth hearth refractory material, the surface of the concave-convex structure is more beneficial to stabilizing the slag iron protective layer, more effective protection is formed on the hearth refractory material, and the problem that the service life of a blast furnace is seriously influenced due to the fact that the corrosion of the circulating hearth refractory material is aggravated by the molten iron in the hearth during tapping in the prior art can be solved.
Fig. 1 is a schematic structural diagram of a heat-conducting long-life blast furnace hearth system, which comprises the following components in percentage by weight as shown in fig. 1: the furnace casing 1, the hearth cooling system 2, the temperature measuring element 3, the second hearth refractory 4 of the heat conductive hearth refractory, and the first hearth refractory (including 51 and 52). An embodiment of the present invention is described in detail below with reference to fig. 1.
As shown in figure 1, the whole hearth system adopts an inclined hearth structure, the outer diameter of a furnace shell 1 of the hearth is gradually reduced from bottom to top, the furnace shell is conical, and the included angle between the furnace shell and the horizontal plane is about 83 degrees. The refractory material of the hearth is tightly attached to the furnace shell in the furnace shell, and when the refractory material of the hearth is floated by the buoyancy of molten iron and tends to float upwards, the conical furnace shell with the gradually reduced outer diameter from bottom to top can bind the refractory material of the hearth downwards, so that the potential safety hazard that the refractory material of the hearth is damaged is reduced.
In actual operation, the furnace hearth can be made of a high-performance novel refractory material (referred to as refractory material for short), the high-performance novel refractory material has good molten iron penetration resistance, corrosion resistance and scouring resistance, and can provide guarantee for the normal work of a first-generation furnace service; the thermal expansion coefficient of the novel refractory material is far lower than that of the conventional and commonly used ceramic cup material, so that the phenomena of upwarp of an air port and cracking of a furnace shell caused by excessive thermal expansion deformation of the refractory material can be avoided.
In one embodiment, the heat conduction hearth refractory material is designed by introducing heat transfer chemistry, and the heat conductivity of the hearth refractory material tends to decrease from the cold surface to the hot surface of the refractory material. For example, the hearth refractory may be a carbon composite brick having thermal conductivity coefficients of 16.21, 14.27, and 13.78 at 300 ℃, 600 ℃, and 800 ℃.
The heat conductivity coefficient of the refractory material is reduced from the cold surface to the hot surface of the blast furnace, which accords with the design principle of the hearth, is beneficial to quickly forming a slag iron protective layer on the hot surface of refractory materials in the production process of the blast furnace, effectively isolates the direct contact between slag and molten iron and the refractory materials of the hearth, and forms a long-acting mechanism for protecting the hearth.
In actual operation, the first hearth refractory of the hearth refractory can be a ceramic composite brick structure, the ceramic composite brick is arranged in a concave-convex structure, and the second hearth refractory can be a carbon brick structure.
Referring to fig. 1 and 2, the carbon brick near the furnace shell is of a large-block carbon brick 4 structure, and the ceramic composite material near the molten iron is of a small-block ceramic composite brick 5 structure. The small ceramic composite bricks close to molten iron are arranged in a concave-convex mode as shown in fig. 2, and the small concave ceramic composite bricks 51 and the small convex ceramic composite bricks 52 enable the inner surface of the hearth refractory material to be in an uneven concave-convex structure. During production and operation, a slag iron protective layer can be formed on the inner surface of the hearth refractory material by the slag and the molten iron, and compared with the smooth refractory material surface shown in fig. 3 and 4, the surface of the concave-convex structure shown in fig. 5 and 6 is more favorable for stabilizing the slag iron protective layer, forming more effective protection on the hearth refractory material and being favorable for prolonging the service life of the blast furnace.
In practical operation, the hearth cooling system 2 is connected with the hearth refractory and can surround the hearth refractory to provide cooling water for the hearth and the refractory so as to adjust the temperature of the hearth and the refractory.
As shown in fig. 7, the system further includes: independent hearth refractory monitoring system 6, hearth refractory monitoring system 6 can monitor the temperature of hearth refractory, the cooling water yield of hearth cooling system 2 and the temperature of water before and after cooling at any time.
In practical operation, a plurality of temperature measuring elements 3 can be arranged at different positions of the refractory material of the hearth for measuring the temperature of the refractory material of the hearth.
The above system may further include: and the control system 7 can control the cooling water quantity and the cooling water temperature in the hearth cooling system by monitoring the temperature of the hearth refractory material obtained by the temperature measuring element 3 according to the hearth refractory material monitoring system 6 by the control system 7 so as to realize the temperature control of the hearth refractory material.
In the specific implementation process, the control system can automatically adjust the cooling water quantity and/or the cooling water temperature of the hearth cooling system according to a preset program after acquiring the monitoring data, so that the cooling strength of the refractory material of the hearth meets the set requirement, and the long-term stable operation of the hearth is ensured.
The blast furnace system comprises the blast furnace hearth system and a furnace bottom system, wherein the furnace bottom system specifically comprises: furnace bottom and furnace bottom refractory materials, an independent furnace bottom cooling system and an independent furnace bottom refractory material monitoring system. The furnace bottom refractory monitoring system can monitor the temperature of the furnace bottom refractory, the cooling water quantity of the furnace bottom refractory cooling system and the water temperature before and after cooling at any time. In actual operation, a plurality of temperature measuring elements can be arranged at different positions of the refractory material of the furnace bottom for measuring the temperature of the refractory material of the furnace bottom.
The control system can also control the cooling water quantity and the cooling water temperature in the furnace bottom cooling system according to the temperature of the furnace bottom refractory material obtained by the furnace bottom refractory material monitoring system through monitoring the temperature measuring element so as to realize the temperature control of the furnace bottom refractory material.
Based on similar inventive concepts, the embodiment of the present invention further provides a control method of a blast furnace hearth system, fig. 8 is a flowchart of the method, and as shown in fig. 8, the method includes:
step 801, monitoring temperature data of refractory materials of a hearth, wherein the refractory materials of the hearth comprise: the surface of the first hearth refractory material is provided with a concave-convex structure;
and step 802, respectively adjusting the cooling water quantity and the cooling water temperature in the hearth cooling system according to the temperature data so as to ensure the long service life of the blast furnace hearth system.
The cooling water quantity and the cooling water temperature in the hearth cooling system are respectively adjusted according to the monitored temperature data of the refractory material of the hearth, so that the cooling strength of the refractory material of the hearth is controlled, the cooling strength of the refractory material of the hearth meets the actual work setting requirement, the furnace hearth cooling system is guaranteed to maintain balanced cooling strength, the long-term stable operation of the hearth is guaranteed, and the long service life of the blast furnace hearth system can be guaranteed. And, through setting up the resistant material surface with the refractory material of hearth into concave-convex structure for slag and molten iron can form the sediment iron protective layer at the refractory material internal surface of hearth, compare with smooth refractory material surface, and the concave-convex structure surface is favorable to the stability of sediment iron protective layer more, forms more effective protection to the refractory material of hearth, is favorable to the longlife of blast furnace.
In practical operation, a plurality of temperature measuring elements can be arranged at different positions of the refractory material of the hearth in advance. The temperature data of the refractory materials of the furnace hearth can be respectively determined by respectively monitoring the temperature data of the plurality of temperature measuring elements.
Through knowing the temperature data of the refractory material of the hearth, the cooling water quantity and the cooling water temperature in the hearth cooling system can be adjusted to realize the temperature control of the refractory material of the hearth.
FIG. 9 is a schematic diagram of an electronic device according to an embodiment of the invention. The electronic device shown in fig. 9 is a general-purpose data processing apparatus comprising a general-purpose computer hardware structure including at least a processor 901 and a memory 902. The processor 901 and the memory 902 are connected by a bus 903. The memory 902 is adapted to store one or more instructions or programs executable by the processor 901. The one or more instructions or programs are executed by processor 901 to implement the steps in the control method of the blast furnace hearth system described above.
The processor 901 may be a stand-alone microprocessor or a collection of one or more microprocessors. Thus, the processor 901 implements processing of data and control of other devices by executing commands stored in the memory 902 to perform the method flows of embodiments of the present invention as described above. The bus 903 connects the above components together, as well as to the display controller 904 and display devices and input/output (I/O) devices 905. Input/output (I/O) devices 905 may be a mouse, keyboard, modem, network interface, touch input device, motion-sensing input device, printer, and other devices known in the art. Typically, input/output (I/O) devices 905 are connected to the system through an input/output (I/O) controller 906.
The memory 902 may store, among other things, software components such as an operating system, communication modules, interaction modules, and application programs. Each of the modules and applications described above corresponds to a set of executable program instructions that perform one or more functions and methods described in embodiments of the invention.
Embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps of the control method of the blast furnace hearth system.
In conclusion, the heat-conducting long-life blast furnace hearth system provided by the embodiment of the invention has good heat-conducting property and low thermal expansion coefficient, and can avoid the phenomena of upwarp of the air port and cracking of the furnace shell; the stable slag iron protective layer can be quickly formed by arranging the inner surface of the hearth refractory material with the concave-convex structure, so that the long service life of the blast furnace is favorably realized; in addition, the heat conductivity coefficient of the refractory material of the furnace hearth is reduced from a cold surface to a hot surface, so that a slag iron protective layer can be quickly formed on the hot surface of the refractory material, and the furnace hearth can be effectively protected for a long time; the inclined hearth structure can ensure that the refractory material of the hearth can not float up due to the buoyancy of molten iron; in addition, by arranging the independent cooling system and the independent monitoring system for the refractory material of the hearth, the control system can control the cooling water quantity and the cooling water temperature according to the refractory material temperature of the hearth monitored by the monitoring system, so that the control on the cooling strength of the refractory material of the hearth is realized, and the control system has great significance for the safe and stable long-term operation of the blast furnace.
The preferred embodiments of the present invention have been described above with reference to the accompanying drawings. The many features and advantages of the embodiments are apparent from the detailed specification, and thus, it is intended by the appended claims to cover all such features and advantages of the embodiments which fall within the true spirit and scope thereof. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the embodiments of the invention to the exact construction and operation illustrated and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope thereof.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. The heat-conducting long-life blast furnace hearth system is characterized by comprising the following components: a furnace shell and a heat-conducting hearth refractory material,
the heat-conductive hearth refractory comprises: the refractory material comprises a first hearth refractory material and a second hearth refractory material which are arranged from inside to outside, wherein the surface of the first hearth refractory material is of a concave-convex structure, so that the slag iron protective layer on the surface of the hearth refractory material is stable.
2. The heat-conducting long-life blast furnace hearth system according to claim 1, wherein said furnace shell is a conical furnace shell with an outer diameter gradually decreasing from bottom to top.
3. The heat-conducting long-life blast furnace hearth system according to claim 1, wherein the heat conductivity of said heat-conducting hearth refractory decreases from a cold side to a hot side.
4. The heat-conducting long-life blast furnace hearth system according to claim 1, wherein the first hearth refractory is of a ceramic composite brick structure, and the second hearth refractory is of a carbon brick structure, wherein the ceramic composite bricks are arranged in a concave-convex structure.
5. The thermally conductive long life blast furnace hearth system of claim 1, further comprising:
and the temperature measuring elements are arranged at different positions of the refractory material of the hearth.
6. The heat-conducting long-life blast furnace hearth system according to claim 5, further comprising:
and the hearth cooling system is connected with the heat-conducting hearth refractory material and is used for providing cooling water for the hearth refractory material.
7. The heat-conducting long-life blast furnace hearth system according to claim 6, further comprising:
and the hearth refractory monitoring system is used for acquiring the temperature of the hearth refractory by monitoring the temperature measuring element and monitoring the cooling water quantity and the cooling water temperature of the hearth cooling system.
8. A method of controlling a blast furnace hearth system, the method comprising:
monitoring temperature data of refractory material of a hearth, the refractory material of the hearth comprising: the surface of the first hearth refractory material is provided with a concave-convex structure;
and respectively adjusting the cooling water quantity and the cooling water temperature in the hearth cooling system according to the temperature data so as to ensure the long service life of the blast furnace hearth system.
9. The method of controlling a blast furnace hearth system according to claim 8, further comprising:
a plurality of temperature measuring elements are arranged at different positions of the hearth refractory material in advance.
10. The method of claim 9, wherein monitoring temperature data of hearth refractories comprises:
respectively monitoring the temperature data of the plurality of temperature measuring elements;
and determining the temperature data of the refractory material of the hearth according to the temperature data of the temperature measuring elements.
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| CN2263655Y (en) * | 1996-05-23 | 1997-10-01 | 首钢总公司 | Blast-furnace hearth furnace bottom lining structure |
| CN203704662U (en) * | 2014-01-13 | 2014-07-09 | 青海际华江源实业有限公司 | Ferrochrome smelting furnace lining |
| CN207581842U (en) * | 2017-12-04 | 2018-07-06 | 中冶赛迪工程技术股份有限公司 | A kind of bottom hearth of blast furnace structure |
| CN108517384A (en) * | 2018-05-04 | 2018-09-11 | 中南大学 | A kind of monitoring method of blast furnace crucibe side wall |
| CN211367611U (en) * | 2019-11-07 | 2020-08-28 | 中冶京诚工程技术有限公司 | Heat-conducting long-life blast furnace hearth system |
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